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Oliver Keis, Claudia Grab, Achim Schneider, Wolfgang Öchsner
BACKGROUND: Since the introduction of the e-learning electrocardiogram (ECG) course 'ECG Online' into the curriculum at the University of Ulm, a small but relatively constant number of students have decided not to participate in the online course but to attend the face-to-face course, although the content of both courses is identical. The present study examined why students prefer one format or the other. METHODS: In a qualitative research approach, ten medical students were questioned in a guided interview...
November 9, 2017: BMC Medical Education
M Herrid, M Billah, J A Skidmore
Successful embryo cryopreservation facilitates the wider application of assisted reproduction technologies and also provides a useful method for gene banking of valuable genetics. Unfortunately attempts to establish an effective cryopreservation protocol for camelid embryos have been unsuccessful. In the current study, a modified vitrification protocol with three steps was investigated, whereby embryos were exposed to solutions containing increasing amounts of glycerol and ethylene glycol for fixed time periods...
October 26, 2017: Animal Reproduction Science
Christina-Jane Crossman-Barnes, Adam Peel, Rebekah Fong-Soe-Khioe, Tracey Sach, Andrew Wilson, Garry Barton
Asthma management, education and environmental interventions have been reported as cost effective in a previous review, (Yong and Shafie et al, 2014), but methods used to estimate costs and outcomes were not discussed in detail. This review updates the previous review by providing economic evidence on the cost effectiveness of studies identified after 2012, and a detailed assessment of the methods used in all identified studies. Twelve databases were searched from 1990 to January 2016, and studies included economic evaluations, asthma subjects, and non-pharmacological interventions written in English...
November 6, 2017: Allergy
J D Hafferty, A I Campbell, L B Navrady, M J Adams, D MacIntyre, S M Lawrie, K Nicodemus, D J Porteous, A M McIntosh
OBJECTIVE: Researchers need to be confident about the reliability of epidemiological studies that quantify medication use through self-report. Some evidence suggests that psychiatric medications are systemically under-reported. Modern record linkage enables validation of self-report with national prescribing data as gold standard. Here, we investigated the validity of medication self-report for multiple medication types. STUDY DESIGN AND SETTING: Participants in the Generation Scotland population-based cohort (N=10,244) recruited 2009-11 self-reported regular usage of several commonly prescribed medication classes...
October 30, 2017: Journal of Clinical Epidemiology
Michele Scaltritti, Marieke Longcamp, F-Xavier Alario
The selection and ordering of response units (phonemes, letters, keystrokes) represents a transversal issue across different modalities of language production. Here, the issue of serial order was investigated with respect to typewriting. Following seminal investigations in the spoken modality, we conducted an experiment where participants typed as many times as possible a pair of words during a fixed time-window. The 2 words shared either their first 2 keystrokes, the last 2 ones, all the keystrokes, or were unrelated...
November 2, 2017: Journal of Experimental Psychology. Learning, Memory, and Cognition
N Oosthuizen, P L P Fontes, C D Sanford, F M Ciriaco, D D Henry, L B Canal, N DiLorenzo, G C Lamb
To determine the effects of estrus synchronization (ES) and fixed-time artificial insemination (TAI) on calving distribution in Bos indicus influenced heifers, 751 Bos taurus × Bos indicus beef heifers were enrolled in a completely randomized design at 2 locations from January to May of 2016. Within location, all heifers were randomly assigned to one of two treatments: 1) SYNCH (n = 371); heifers were exposed to the 5-day CO-Synch + CIDR protocol where they were treated with 100 μg of GnRH, 25 mg of PGF2α, and a controlled internal drug releasing insert (CIDR) on d 0; heifers received 50 mg of PGF2α at CIDR removal on d 5, and were treated with 100 μg of GnRH and TAI 66 ± 2 h later on d 8; or 2) CONTROL (n = 380); heifers were exposed to natural service without ES or TAI...
October 20, 2017: Theriogenology
A K Singh, A Kumar, M Honparkhe, S Kaur, H Kaur, Sps Ghuman, P S Brar
The objective of this study was to compare different extenders for post-thaw in vitro sperm function and in vivo fertility of buffalo semen. Accordingly, sperm of 30 ejaculates extended in egg yolk (TRIS with 20% egg yolk; EY), two soya lecithin-based (SL-1; AndroMed(®) and SL-2; Bioxcell(®) ) and a liposome-based extender (LS; OptiXcell(®) ) were tested. The post-thaw semen was evaluated for computer-assisted sperm analysis (CASA), sperm viability, membrane and acrosome integrity, DNA integrity and acrosome reaction and first service pregnancy rate (FSPR) in a fixed-time artificial insemination programme...
October 28, 2017: Reproduction in Domestic Animals, Zuchthygiene
F López-Gatius, Rhf Hunter
The objective of this study was to determine whether fluid drainage from the subordinate follicles by ovum pickup procedures prevents the risk of twin pregnancy without reducing the fertility of the cow. Lactating dairy cows with at least two follicles over 12 mm diameter located one on each ovary and selected from synchronized groups for fixed-time insemination were assigned to a Control (n = 49) or Drainage (n = 49) group. The largest follicle was considered as the dominant follicle. Draining of all subordinate follicles (≥10 mm) was performed in the Drainage group...
October 27, 2017: Reproduction in Domestic Animals, Zuchthygiene
Olivier Senn, Claudia Bullerjahn, Lorenz Kilchenmann, Richard von Georgi
Microtiming has been assumed to be vital for the experience of groove, but past research presented conflicting results: some studies found that microtiming is irrelevant for groove, others reported that microtiming has a detrimental effect on the groove experience, yet others described circumstances under which microtiming has no negative impact on groove. The three studies in this paper aim at explaining some of these discrepancies by clarifying to what extent listeners' emotional responses to microtiming depend on the distribution of microtiming deviations across instrumental parts (voicing) or other moderating factors like tempo or rhythmic density...
2017: Frontiers in Psychology
E González-García, P de Oliveira Golini, P Hassoun, F Bocquier, D Hazard, L A González, A B Ingham, G J Bishop-Hurley, P L Greenwood
The main limitation for determining feed efficiency of freely grazing ruminants is measurement of daily individual feed intake. This paper describes an investigation that assessed a method for estimating intake of forage based on changes in BW of ewes. A total of 24 dry and non-pregnant Romane ewes (12 hoggets, HOG; mean±SD 51.8±2.8 kg BW; body condition score (BCS) 2.6±0.2; and 12 adults, ADU; 60.4±8.5 kg BW; BCS 2.7±0.8) were selected for the study and moved from their rangeland system to a confined pen with controlled conditions and equipped with individual automatic feeders...
October 26, 2017: Animal: An International Journal of Animal Bioscience
Rahul Chanchlani, Sang Joseph Kim, Esther D Kim, Tonny Banh, Karlota Borges, Jovanka Vasilevska-Ristovska, Yanhong Li, Vicky Ng, Anne I Dipchand, Melinda Solomon, Diane Hebert, Rulan S Parekh
Background: Posttransplant hyperglycemia is an important predictor of new-onset diabetes after transplantation, and both are associated with significant morbidity and mortality. Precise estimates of posttransplant hyperglycemia and diabetes in children are unknown. Low magnesium and potassium levels may also lead to diabetes after transplantation, with limited evidence in children. Methods: We conducted a cohort study of 451 pediatric solid organ transplant recipients to determine the incidence of hyperglycemia and diabetes, and the association of cations with both endpoints...
September 1, 2017: Nephrology, Dialysis, Transplantation
Marc Delarue, Patrice Koehl, Henri Orland
We propose a novel stochastic method to generate Brownian paths conditioned to start at an initial point and end at a given final point during a fixed time tf under a given potential U(x). These paths are sampled with a probability given by the overdamped Langevin dynamics. We show that these paths can be exactly generated by a local stochastic partial differential equation. This equation cannot be solved in general but we present several approximations that are valid either in the low temperature regime or in the presence of barrier crossing...
October 21, 2017: Journal of Chemical Physics
Vladinis O Miranda, Fernando C Oliveira, Jenniffer H Dias, Sergio F Vargas Júnior, Karina L Goularte, Manoel F Sá Filho, Ocilon G de Sá Filho, Hernan Baldassarre, Arnaldo D Vieira, Thomaz Lucia, Bernardo G Gasperin
Although fixed-time artificial insemination (FTAI) protocols are available for sheep, estrus resynchronization has not been previously reported. The objectives of this study were to evaluate the effect of estrus resynchronization with exogenous progestogen on endogenous progesterone levels and to compare pregnancy rates after two consecutive estrus synchronizations in ewes. In Experiment 1, ewes (n = 20) received an intravaginal device (IVD) containing 60 mg medroxyprogesterone acetate (MPA) for 10 days...
October 10, 2017: Theriogenology
Clémence Bélanger, Bernard Blais Morin, Andréanne Brousseau, Nicolas Gagné, Anne Tremblay, Kathya Daigle, Philippe Goffaux, Guillaume Léonard
BACKGROUND AND PURPOSE: Many psychological factors are known to influence pain perception. Among them, intolerance of uncertainty (IU) may play a key modulating role in situations where uncertainty prevails, especially uncertainty regarding the timing of painful events. The objective of this study was to explore the impact of individual differences in IU on pain perception during predictable and unpredictable stimulation timings. We hypothesized that people with high IU, as opposed to those with low IU, would perceive more pain when the timing of painful stimulations cannot be predicted, as compared to when they can...
October 12, 2017: Scandinavian Journal of Pain
W de Graaff, B Grimard
Synchronization programs using progesterone-releasing intravaginal devices that allow for fixed time artificial insemination are still finding increasing application in bovine reproduction. This practice is useful for rationalizing livestock management because an increased number of cows can be inseminated in one session without the need for estrus detection. Although much of the innovation related to the design and development of intravaginal devices for use in cattle took place in the previous century, progress in understanding the physiology of the bovine estrous cycle resulted in shorter treatment durations, a trend which is still continuing...
September 27, 2017: Theriogenology
Patrick Bou Samra, Paul El Tomb, Mohammad Hosni, Ahmad Kassem, Robin Rizk, Sami Shayya, Sarah Assaad
This comparative cross-sectional study examines the association between traffic congestion and elevation of systolic and/or diastolic blood pressure levels among a convenience sample of 310 drivers. Data collection took place during a gas station pause at a fixed time of day. Higher average systolic (142 vs 123 mm Hg) and diastolic (87 vs 78 mm Hg) blood pressures were detected among drivers exposed to traffic congestion compared with those who were not exposed (P<.001), while controlling for body mass index, age, sex, pack-year smoking, driving hours per week, and occupational driving...
October 10, 2017: Journal of Clinical Hypertension
Tao Xin, Julen S Pedernales, Lucas Lamata, Enrique Solano, Gui-Lu Long
We measure multi-time correlation functions of a set of Pauli operators on a two-level system, which can be used to retrieve its associated linear response functions. The two-level system is an effective spin constructed from the nuclear spins of (1)H atoms in a solution of (13)C-labeled chloroform. Response functions characterize the linear response of the system to a family of perturbations, allowing us to compute physical quantities such as the magnetic susceptibility of the effective spin. We use techniques exported from quantum information to measure time correlations on the two-level system...
October 9, 2017: Scientific Reports
Wen Zhao, Gang Liu, Xi Ma, Bing He, Yunfeng Dong
The distributed synchronization of networked drive-response systems is investigated in this paper. A novel nonlinear protocol is proposed to ensure that the tracking errors converge to zeros in a fixed-time. By comparison with previous synchronization methods, the present method considers more practical conditions and the synchronization time is not dependent of arbitrary initial conditions but can be offline pre-assign according to the task assignment. Finally, the feasibility and validity of the presented protocol have been illustrated by a numerical simulation...
October 5, 2017: ISA Transactions
Nassim E Ajami, Shakti Gupta, Mano R Maurya, Phu Nguyen, Julie Yi-Shuan Li, John Y-J Shyy, Zhen Chen, Shu Chien, Shankar Subramaniam
Blood flow and vascular shear stress patterns play a significant role in inducing and modulating physiological responses of endothelial cells (ECs). Pulsatile shear (PS) is associated with an atheroprotective endothelial phenotype, while oscillatory shear (OS) is associated with an atheroprone endothelial phenotype. Although mechanisms of endothelial shear response have been extensively studied, most studies focus on characterization of single molecular pathways, mainly at fixed time points after stress application...
October 10, 2017: Proceedings of the National Academy of Sciences of the United States of America
Carlos F Aparicio, Paul J Hennigan, Laurel J Mulligan, Benigno Alonso-Alvarez
Indications of Attention Deficit Hyperactivity Disorder (ADHD) in the spontaneously hypertensive rat (SHR) are not consistent across different tests of impulsivity, questioning the SHR's validity as a rodent model of ADHD. This study used a concurrent-chains procedure to examine possible differences in impulsive choice between SHRs and control-normotensive Wistar Kyoto (WKY) rats. The aim was to extend the generality of findings showing regularities between the hyperbolic-decay model and the generalized matching law fitting delay discounting data from nonhuman animals...
September 26, 2017: Behavioural Brain Research
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